ITEM NAME:LED Mini Voltmeter Voltage Indicator Panel Meter DC 0-9,99V 20 mA Yellow Ne L1R6 LED Mini Voltmeter Voltage Indicator Panel Meter DC 0-9,99V 20 mA Yellow Ne L1R6 Display: Three digital tube You can install these mini voltage display easily. Measuring range: DC 0 9,99V Entrance area of power supply: DC 30V 4.5 Working current: less than 20 mA Dimension: approx. 35 x 14 x 10 mm Name: Voltage display module Accuracy: 1% Display color: Yellow Storage temperature: -10 Celsius ~ + 65 Celsius Color: Black: common negative pole Red: positive pole of the power supply Blue: positive pole of the input voltage when testing package content: 1 x Mini voltage display Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm..Working current: less than 20 mA.